Collapsible core.



` ,Gf H.NAYLUR.

COLLAPSIBLE, GORE. v Anuourolsr. FILED MAB. 4, 1914 Patented Mar. 3o;1915.

I Maaate.,

D sfr ATENT @lhwlhllltlldo' GEORGE n. I NAYLOR, or

' ceitrjarsistn CORE.

Specification of Letters Patent.

TRENroN, New JERSEY, Assieivon ro Fenna. pannen, or

TRnNToNrNEw-JERSEY.;

.,pplieation sied Marelli., 1914. seria1N0.822,45a. j

To all whomy t may concern.'

' Be it known that I, GEORGE H. NAYLOR, a citizen of the UnitedStates,residing at Trenton, in the county of Mercer and State of l\' ew Jersey,have inventedcertain new and useful Improvements in Collapsible Cores,of which the following is a specification, reference being had to theaccompanying drawings.

This invention relates to new and useful improvements in cores forpneumatic tires and more particularly to that class of cores which arecollapsible. I

An'object ofthis invention is the provision. of a collapsible core whichis composed of a plurality of segmental sections, the ends of theadjoining sections abutting against each other, the core being providedwith means for connecting the several sections, so that when connected,they form a circular member about which pneumatic tires may be molded.

A further object of this invention 1s the provision of improved meanswhereby the several segmental sections of the core may be quickly andeasily connected to each other, and whereby the several sections may bequickly collapsed to remove the core from the tire after the same hasbeen molded.

With these and other objects in view, my invention consists in the novelconstruction. arrangement, and combination of parts to be hereinaftermore fully describedL claimed, and illustrated in the accompanyingdrawings, in whichl1`igure ll is a side elevation, partly in section, ofthe core ready for use. F ig, 2 is an end view, partly in section, ofone segment of the core. Fig. 3 is an end View of another section of thecore; and Fig. 4 is a fragmentary perspective view of one end of one ofthe segments.

Referring more particularly to the drawing, the numeral 5 designates aplurality of segmental sections, which are annular in cross section, andwhich are preferably four in number as shown in the drawing. Each of thesections 5 is provided at its inner edge with a flange 6 which issubstantially T-shaped in cross section, the enlarged head 7 of eachflange being adapted to project from the tire while the same is beingmolded upon the core. The opposite ends of each section 5 are adapted toabut against the ends of the adjoining sections,

thereof with a socket opposite end with a proj rib or projection 9ineach'scctio'ntbeing adapted for engagement in the recess in theadjoining" section `and each section ris"`provid`e(;lI at one end" crecess 8,:a`ndatlils j ction"- or rib,` 9, the A,

so llaswto :prevent out rateaiea nai. seglares,

ward separation of the 'seye'ral sections and arranged to form "acore",nThe en`d of one` section 5 is provided with `aA'slot l0 at" one endthereof which, extendsnfrom `the outer f' face of this sectionlto"th`e"re'cess 8'," so that the projection 9 onthe adjoining sectionmay slide through the slot l0 into the recess 8 and thereby allow theends of the seve `al sections to fit closely together.

.Formed in the inner face of the enlarged ihead 7 of the flange of eachsection at its 4opposite ends, are slots 1l, the slots in the adjoiningsections registering to form recesses, to receive the locking plates 12.Formed in the walls of each slot are a .pair of registering taperedopenings 12, the locking plates being also .A provided with openings 13which register' with the openings in the walls of the slots, and taperedpins 14 are adapted for engagement in the registering openings in thewalls of the slots| and the locking plates, to maintain the severalsections in their respective positions, while the tire is being moldedupon the core. As the enlarged heads 7 of theV flanges 6 project fromthe tire when the same is being molded, it will be seen that the pins 14may be readily removed from the registering openings in the walls of theslots and the plates after the tire has been molded, so that the platesl2 may be removed from the slots and the sections withdrawn from themolded tire. After the plates l2lhave been removed from the slots, theend of the section 5 in which the slot l0 communicating with the recessS in the section is formed, may be moved inwardly, the slot l0 passingby the block 9 on the adjoining section, so that the section having theslot l0 therein may be irst withdrawn from the molded tire, theremaining sections 5 being capable of ready removal, after the firstsection is withdrawn. j

The slot 11 in one end of each section is preferably provided with atapered inner wall. 15, and one end of each locking plate 12 is providedwith a notch or recess 16, so that a. suitable tool (not shown) may beinserted in the-notches 16 to easily remove Vol the locking plates 12from the sections when the tapered pins 14 have been disengagedtherefrom.

Having thus fully described my invention, 'what I claim as new anddesire to secure by Letters Patent is:

A collapsible core for tires comprising a plurality of segmentalsections adapted to form a ring when the opposite ends of each sectionare engaged against the ends of adjoining sections, each section beingprovide-d with a flange upon its inner edge to project from the tirewhile the same is being molded upon the core, the inner face of eachflange at its opposite ends being formed with slots, the slots ofadjoining sections registering when the core is in a position for use,the Walls of said slots having tapered openings formed therein, lockingplates having openings therein disposed within the registering slots,said openings in the locking plates registering with the taperedopenings in the walls of the slots, and tapered pins adapted forengagement through the registering openings to detachably secure saidplates in position.

In testimony whereof I hereunto my signature in the presence of twoWitnesses.

- GEORGE H. NAYLOR. Witnesses LAURA E. MARSHALL, ERWIN lil. MARsHALLlCopies of this patent mai' be obtained for ve cents each, by addressingthe "Commissioner of Patents,

Washington, D. C.

